diff --git a/python-dsl/CHANGELOG.md b/python-dsl/CHANGELOG.md
new file mode 100644
index 00000000..4154fabe
--- /dev/null
+++ b/python-dsl/CHANGELOG.md
@@ -0,0 +1,77 @@
+# Changelog
+
+All notable changes to the codepathfinder Python DSL will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [1.1.0] - 2025-11-27
+
+### Added
+- **Positional argument matching** in `calls()` matcher via `match_position` parameter
+  - Support for simple positional matching: `calls("open", match_position={1: "w"})`
+  - Support for tuple indexing: `calls("socket.bind", match_position={"0[0]": "0.0.0.0"})`
+  - Support for list of values: `calls("yaml.load", match_position={1: ["Loader", "UnsafeLoader"]})`
+- **Keyword argument matching** in `calls()` matcher via `match_name` parameter
+  - Example: `calls("app.run", match_name={"debug": True})`
+- **Wildcard support in argument values**
+  - Pattern matching in arguments: `calls("chmod", match_position={1: "0o7*"})`
+  - IP address wildcards: `calls("connect", match_position={"0[0]": "192.168.*"})`
+- **Type hints** added to `matchers.py` for better IDE support and type checking
+- New `ArgumentValue` type alias for clearer type definitions
+
+### Changed
+- Enhanced `CallMatcher` class with argument constraint support
+- Improved documentation with comprehensive examples for new features
+- Updated IR serialization to include `positionalArgs` and `keywordArgs` fields
+
+### Fixed
+- Critical bugs in argument matching logic (PR #390)
+- Tuple indexing for nested argument structures (PR #389)
+
+### Technical Details
+- Automatic wildcard detection in argument values (independent of pattern wildcards)
+- Constraint propagation from pattern wildcards to argument constraints
+- `matchMode` field changed from `match_mode` (camelCase consistency)
+
+## [1.0.0] - 2025-11-09
+
+### Added
+- Initial release of codepathfinder Python DSL
+- Core matchers: `calls()` and `variable()`
+- Rule definition system with `@rule` decorator
+- Dataflow analysis with `flows()`
+- Propagation presets and custom propagation rules
+- Logic operators: `And`, `Or`, `Not`
+- Configuration system for default propagation and scope
+- JSON IR generation for Go executor integration
+- Comprehensive test suite with pytest
+- Type hints and mypy support
+- Black and Ruff formatting/linting configuration
+
+### Features
+- **Matchers**
+  - `calls()`: Match function/method calls with wildcard support
+  - `variable()`: Match variable references with patterns
+
+- **Dataflow Analysis**
+  - Source-to-sink tracking
+  - Configurable propagation rules
+  - Phase 1 and Phase 2 propagation presets
+
+- **Rule System**
+  - Decorator-based rule definitions
+  - Severity levels (info, low, medium, high, critical)
+  - Metadata support (CWE, OWASP references)
+
+- **Logic Operators**
+  - Combine matchers with And, Or, Not
+  - Composable security patterns
+
+### Documentation
+- README with quickstart guide
+- Inline examples and docstrings
+- OWASP Top 10 example patterns
+
+[1.1.0]: https://github.com/shivasurya/code-pathfinder/compare/v1.0.0...v1.1.0
+[1.0.0]: https://github.com/shivasurya/code-pathfinder/releases/tag/v1.0.0
diff --git a/python-dsl/codepathfinder/__init__.py b/python-dsl/codepathfinder/__init__.py
index da4570ad..38d745b4 100644
--- a/python-dsl/codepathfinder/__init__.py
+++ b/python-dsl/codepathfinder/__init__.py
@@ -22,7 +22,7 @@
         ... )
 """
 
-__version__ = "1.0.0"
+__version__ = "1.1.0"
 
 from .matchers import calls, variable
 from .decorators import rule
diff --git a/python-dsl/pyproject.toml b/python-dsl/pyproject.toml
index 02ccb1ba..87128708 100644
--- a/python-dsl/pyproject.toml
+++ b/python-dsl/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "codepathfinder"
-version = "1.0.0"
+version = "1.1.0"
 description = "Python DSL for code-pathfinder security patterns"
 readme = "README.md"
 requires-python = ">=3.8"